clazzservlet.java

详细的学生档案管理系统,包括系统管理员学生,老师,辅助管理员,功能已经很完善了

package com.nitpro.school.servlet;

import java.util.Date;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.nitpro.school.bean.Clazz;
import com.nitpro.school.bean.Emp;
import com.nitpro.school.model.ClazzModel;
import com.nitpro.school.model.EmpModel;
import com.nitpro.school.util.Utils;

public class ClazzServlet extends HttpServlet{
	public void doPost(HttpServletRequest req,HttpServletResponse resp) throws ServletException, java.io.IOException{
		doIt(req, resp);
	}

	public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException{
		doIt(req, resp);
	}
	
	
	public void doIt(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException{
        String method = req.getParameter("method");//通过标记参数进行分支判断
        if("list".equals(method)){
        	list(req, resp);
        }else if("edit".equals(method)){
        	edit(req, resp);
        }else if("save".equals(method)){
        	save(req, resp);
        }
	}
	
	public void list(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException{
		ClazzModel clazzModel = new ClazzModel();
		List<Clazz> list = clazzModel.getClazz();
		req.setAttribute("list", list);
		RequestDispatcher rd = req.getRequestDispatcher("/emp/clazzlist.jsp");
		rd.forward(req, resp);
	}

	public void save(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException{
		int	clazzId = Utils.strToInt(req.getParameter("clazzId"));
	    String clazzName = req.getParameter("clazzName");

	    Date sdate = Utils.strToDate(req.getParameter("sdate"));
	    Date edate = Utils.strToDate(req.getParameter("edate"));
	    
	    Clazz clazz = new Clazz();
	    clazz.setClazzId(clazzId);
	    clazz.setClazzName(clazzName);
	    clazz.setSdate(sdate);
	    clazz.setEdate(edate);

	    ClazzModel clazzModel = new ClazzModel();
	    clazzModel.saveClazz(clazz);
	    list(req, resp);
	}

	public void edit(HttpServletRequest req, HttpServletResponse resp) throws ServletException, java.io.IOException{
		int	clazzId = Utils.strToInt(req.getParameter("clazzId"));
	    ClazzModel clazzModel = new ClazzModel();
		Clazz clazz = clazzModel.getClazzById(clazzId);
		req.setAttribute("clazz", clazz);
		RequestDispatcher rd = req.getRequestDispatcher("/emp/clazzedit.jsp");
		rd.forward(req, resp);
	}

}